Is that site promoted by wearing signatures alone? Or are there other ways for the site to promote?
It was only through wearing signatures in bitcointalk plus posting in their forum to earn some sats. So the traffic you are probably looking at which was high at the beginning was due to spammers and fake accounts. Not organic traffic.
If the signature campaign earns all that many visits, I do not expect that they will stop..
Resources like money will limit them. Don't you see they have already started planning to pay out in shit tokens?